[ntp:questions] Meinberg NTP monitor, silly question

David J Taylor david-taylor at blueyonder.delete-this-bit.and-this-part.co.uk.invalid
Mon Dec 21 16:16:01 UTC 2009


"Dave Hart" <davehart at gmail.com> wrote in message 
news:b0496413-c034-4be1-9d51-2028b8d8f69d at y32g2000prd.googlegroups.com...
[]
> Further, despite the fact that this thread started out with you asking
> what the 'o' meant in the ntpq peers billboard, which indicates
> working PPSAPI (and hence working serialpps.sys), you've been
> mistakenly assuming that because you see a message about user-mode
> PPS, that means serialpps.sys is not working.  As long as one of your
> refclocks has 'o' in the billboard, you know it is successfully
> talking to serialpps.sys via PPSAPI.  The fact that the NMEA refclock
> is using user-mode PPS timestamps does not imply the PPS/atom driver
> is not.  In fact, the atom driver will only work at all on systems
> with functional PPSAPI.  The "user-mode PPS" message _does_ mean you
> could get a respectable result without using PPS(2)/atom/PPSAPI/
> serialpps.sys.
>
> Cheers,
> Dave Hart

Dave,

That's most helpful.  So just to be sure:  if the "o" appears as the 
tally-code, the system /must/ be using kernel mode timestamps.  Yes?

Could the use of kernel-mode be logged, as having the "user-mode" message 
causes confusion.  Or is it not that simple now the components are 
separate?

Cheers,
David 




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